*significance-threshold*

The value of this variable should be a number between 0.0 and
1.0. It is used as a significance threshold by the runtime analyzer
display functions, show-call-graph and show-flat-profile. Functions which
contribute less than the significance threshold are not
displayed. This allows the runtime analyzer display functions to
suppress reporting of functions whose total contribution is considered
insignificant in the total profile data sample. Comparison is made
between the value of this variable and the ratio of the sum of the
function and all of its callees, recursively and the total data
recorded in the whole profile sample. The initial value of this
variable is 0.01.

This variable only affects display of runtime analyzer data, not
the collection of data. If you want to see more or less, redisplay
after resetting this and other runtime analyzer display variables as
desired.